Why do graphs such y = (1/4)^x + 4 still have values for 4?

Re: Why do graphs such y = (1/4)^x + 4 still have values for 4?

I have no clue what you mean by this. What do you mean by "values for 4"? My first thought was that "for 4" meant "for x= 4" but that's easy to calculate- if x= 4, then . If you mean "there exist x such that y= 4", it is not true. If , then and there is no such x.